Thread: Issue creating objects with inheritance and initializater list

  1. #1
    Registered User
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    Sep 2019
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    Issue creating objects with inheritance and initializater list

    Hello. I want to combine a constructor that simultaneously uses an initializer list together with inheritance. My problem is that I am receiving these error messages:

    |4|error: no match for call to (Vec4f) (float, float, float, float) |5|error: no match for call to (Vec4f) (float, float, float, float) |6|error: no match for call to (Vec4f) (float, float, float, float) |7|error: no match for call to (Vec4f) (float, float, float, float)|
    Bellow a sample code that reproduces the above error:

    Code:
    class Vec3f {
       public:
          inline Vec3f () : x (0), y (0), z (0) {}
          inline Vec3f (float xx, float yy, float zz) : x (xx), y (yy), z (zz)  { }
       private:
          float x,y,z;
    };
    
    class Vec4f : Vec3f
    {
       public:
          inline Vec4f (): Vec3f(), w(0) {}
          inline Vec4f (float a,float b,float c,float d): Vec3f (a,b,c), w(d) {}
       private:
          float w;
    };
    
    class Matrix4x4 {
       public:
          void setIdentity ();
       private:
          Vec4f row1, row2, row3, row4;
    };
    
    void Matrix4x4::setIdentity () {
       row1 (1.0f,0.0f,0.0f,0.0f);
       row2 (0.0f,1.0f,0.0f,0.0f);
       row3 (0.0f,0.0f,1.0f,0.0f);
       row4 (0.0f,0.0f,0.0f,1.0f);
    }
    
    
    main () {
       Matrix4x4 a;
       a.setIdentity ();
    }
    So, any suggestions. Thanks for the input.

    P.S: I first opened a thread about it here: Initializer list with inheritance - C++ Forum. Until the present moment there was no solution, but if it shows up there, I will update here with the solution.

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
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    One of two way perhaps.
    Code:
    class Vec3f {
       public:
          inline Vec3f () : x (0), y (0), z (0) {}
          inline Vec3f (float xx, float yy, float zz) : x (xx), y (yy), z (zz)  { }
          inline void Set3f (float xx, float yy, float zz) {
            x = (xx);
            y = (yy);
            z = (zz);
          }
       private:
          float x,y,z;
    };
    
    class Vec4f : Vec3f
    {
       public:
          inline Vec4f (): Vec3f(), w(0) {}
          inline Vec4f (float a,float b,float c,float d): Vec3f (a,b,c), w(d) {}
          inline void Set4f (float a,float b,float c,float d) {
            Set3f(a,b,c);
            w = d;
          }
       private:
          float w;
    };
    
    class Matrix4x4 {
       public:
          void setIdentity ();
          Matrix4x4() :
            row1 (1.0f,0.0f,0.0f,0.0f),
            row2 (0.0f,1.0f,0.0f,0.0f),
            row3 (0.0f,0.0f,1.0f,0.0f),
            row4 (0.0f,0.0f,0.0f,1.0f)
          {
          }
       private:
          Vec4f row1, row2, row3, row4;
    };
    
    void Matrix4x4::setIdentity () {
       row1.Set4f(1.0f,0.0f,0.0f,0.0f);
       row2.Set4f(0.0f,1.0f,0.0f,0.0f);
       row3.Set4f(0.0f,0.0f,1.0f,0.0f);
       row4.Set4f(0.0f,0.0f,0.0f,1.0f);
    }
    
    
    int main () {
       Matrix4x4 a;
       a.setIdentity ();
    }
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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